for, while and do-while+infinite loops in c++

 #include<iostream>


using namespace std;

int main() {
    /*loops in c++:
    there are 3 types of loops in c++:
    1)For loop
    2)while loop
    3)Do-while loop*/
   
    //For loop in c++:
   
    // let me say i wanna print numbers upto 50 so i can do the following things
    // #printing numbers just by cout
    // cout<<1;
    // cout<<2;
    // cout<<3;
    // and soo on  
    // #or
    // int i=1;
    // cout<<i;
    // i++;
    // cout<<i;
    // i++;
    // and soo on  

    // #or we can use loops for it, for very simplification

    // for (int i = 0; i <= 50; i++)
    // {
    //     code
    //     cout<<i<<endl;
    //     i++; yaha i++ nhi lgana vrna 2 baar updation hojaega
    // }

    // syntax for "for" loop:
    // for (initialization; condition; updation)
    // {
    //     loop body (c++ code);
    // }
    // sbse pehle initialization hoga (sirf ek baar) uske baad conditon check hogi  
    // then compiler loop body ke and jaega and then updation krega and so on

    //hum infinite loop bi bana skte hain, conditon ko hmesha true rkhein to
    //for example

    // for (int i = 0; 40 <= 50; i++)
    // {
    //     /* code */
    //     cout<<i<<endl;
    //     // i++; yaha i++ nhi lgana vrna 2 baar updation hojaega
    // }
    //ye infinite loop hai coz 40 is always less than 50

    /*******WHILE LOOP IN C++*******/

    // int i=1;
    // while (i<=50){
    //     cout<<i<<endl;
    //     i++;
    // }

    // syntax for while loop:
    // while (condition){
    //     c++statements;
    // }
    //we can also make infinite loop using while loop
    //for example:

    // while(true){
    //     cout<<i<<endl;
    //     i++;
    // }
    // it'll print numbers upto inifnity

    /**************DO WHILE LOOP IN C++*************** */
    // int i=1;
    // do{
    //     cout<<i<<endl;
    //     i++;
    // } while (i<=50);
   
    // syntax for do while loop:
    // do{
    //     c++ statements;
    // } while (codition);

    //do while loop atleast ek baar to execute hota hi hai
    //fpr example

    int i=1;
    do{
        cout<<i<<endl;
        i++;
    } while(false);

    //sirf 1 print hoga then baki sbme condition false hojaegi
    //we can also make infinite while loop by using "true" as condition

    return 0;
}

Comments

Post a Comment

Popular posts from this blog

Function Overloading in C++

  #include <iostream> using namespace std ; int sum ( int a , int b ){     cout << "by function1 is " ;     return a + b; } int sum ( int a , int b , int c ){     cout << "by function2 is " ;     return a + b + c; } int volume ( int a ){     return a * a * a; } int volume ( int r , int h ){     return 3.14 * r * r * h; } int volume ( int l , int b , int h ){     return l * b * h; } int main (){     cout << "the sum of 5 and 7 " << sum ( 5 , 7 ) << endl;     cout << "the sum of 5, 7 and 57 " << sum ( 5 , 7 , 57 ) << endl;     cout << "the volume of cube of side length 5 is " << volume ( 5 ) << endl;     cout << "the volume of cylinder of radius 5 and height 7 is " << volume ( 5 , 7 ) << endl;     cout << "the volume of cuboid of length 5, bredth 7...
Read more

oops recall, basic operations and nesting of member functions

  /*OOPS---> Classes and Objects C++--> initially called as C with classes by stroustroup Class--> extension of structures in C Structures had limitations     - members are public     - a function cannot be created inside structure     - no methods Classes --> Structures + more Classes --> can have methods and properties Classes --> can make few members as private and few as public Structues in c++ are typedef (mtlb typedef na lgakr bi structures ke varibales define kre to vo hojaenge) you can declare objects along with class declaration like this:     class Employee {           class definition           } krishna, shalini; harry.salary = 9 makes no sense if salary is private */ /************NESTING OF MEMBER FUNCTIONS******** */ #include <iostream> using namespace std ; // int main(){     //     binary b; //     b.read(); //   ...
Read more

OBJECT ORIENTED PROGRAMMING, classes public and private access modifiers (syntax)

/**************OBJECT ORIENTED PROGRAMMING (oops)************ */ /*why oops??? #c++ language was designed with the main intention of adding object oriented features to C language #as the size of program increases readability, maintaibility and bug free nature of the program decreases. #this was tha main problem with langage C #as a result the possiblity of not addressing the problem in an effective way increases #also, as data was almost neglected, data security was easily compromised #using classes solves this problem by modelling program as a real world scenario PROCEDURE ORIENTED PROGRAMMING (POP) (jo abi tak kr rahe the) #consists of writing a sequence of instructions for the computer to follow #main focus is one functions and not on the flow of data #functions can either use local or global data #data moves openly from function to function OBJECT ORIENTED PROGRAMMING #Works on the basis of CLASSES and OBJECTS #A class is a template to create objects #treats data as a critical elem...
Read more